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mTLIP vs QIPB for Postoperative Analgesia After Lumbar Instrumentation Surgery

NCT07370415 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 80

Last updated 2026-03-06

No results posted yet for this study

Summary

Lumbar instrumentation surgery is associated with severe postoperative pain due to extensive tissue dissection and prolonged muscle retraction during the procedure. Inadequate postoperative pain control may result in delayed mobilization, increased cardiopulmonary complications, and prolonged hospital stay. Ultrasound-guided regional analgesia techniques are increasingly used to improve postoperative pain management after lumbar spine surgery. The thoracolumbar interfascial plane (TLIP) block has been shown to provide effective analgesia for lumbar instrumentation surgery, and its modified technique (mTLIP) has been reported to enhance postoperative pain control. The quadro-iliac plane (QIP) block is a newly described fascial plane block with promising results in lumbar spine surgery. This randomized controlled trial aims to compare the postoperative analgesic effectiveness of the modified thoracolumbar interfascial plane block and the quadro-iliac plane block in patients undergoing lumbar instrumentation surgery.

Conditions

  • Pain, Postoperative

Interventions

PROCEDURE

Modified Thoracolumbar Interfascial Plane Block (mTLIP)

An ultrasound-guided bilateral fascial plane block in which local anesthetic is injected into the interfascial plane between the longissimus and iliocostalis muscles at the operated lumbar levels. The block is performed under sterile conditions at the end of surgery using 0.25% bupivacaine (20 mL per side; total volume 40 mL).

PROCEDURE

Quadro-Iliac Plane Block (QIPB):

An ultrasound-guided bilateral fascial plane block in which local anesthetic is injected at the point where the quadratus lumborum muscle attaches to the iliac crest, allowing spread between the erector spinae and quadratus lumborum muscles. The block is performed under sterile conditions at the end of surgery using 0.25% bupivacaine (20 mL per side; total volume 40 mL).

Sponsors & Collaborators

  • Bursa City Hospital

    lead OTHER_GOV

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-03-20
Primary Completion
2026-06-30
Completion
2026-09-30

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07370415 on ClinicalTrials.gov